Skin
Staphylococcus epidermidis
Nose
Staphylococcus epidermidis
Colonized by Staphylococcus aureus
Oropharynx
Viridans group streptococci
Dental plaque
Streptococcus mutans
Colon
Bacteroides fragilis > Escherichia coli
Vagina
Lactobacillus
Colonized by E. coli and group B strep (S. agalactiae)
C-Section Neonates
No flora but rapidly colonized after birth